Printing-press.



Patented May 17, 1910.

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Patented May 17, 1910.

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Attest Inventor:

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JOHN THOMSON, OF NEW YORK, N. Y., ASSIGNOR TO JOHN THOMSON PRESS COMPANY,

OF JERSEY CITY, NEW JERSEY, A CORPORATION 01'! NEW JERSEY.

PRINTING-PRESS.

Specification of Letters Patent. Application filed August 17, 1908.

Patented May 17, 1910. Serial No. 448,765.

To all whom it may concern:

Be it known that I, JOHN THOMSON, a citizen of the United States, and a resident of the borough of Manhattan of the city of New York, in the county and State of New York, have invented certain new and useful Improvements in Printing-Presses, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

In a companion application for Letters Patent filed August 17, 1908, Serial No. 448,764, I have shown and described certain improvements in the mechanism for effecting the reciprocation of the form-inking carriage of printing presses, which improvements, as by reference to said application it will appear, involve the substitution of a link, for a somewhat more complex arrangement, to connect the crank disk with a weighted lever in operative relation with the carriage. In the case of the mechanism shown in that application, the link referred to is directly connected to the weighted lever and there is no provision for disconecting the mechanism to check the movement of the carriage while the rest of the machine continues in operation.

The present improvements have been developed with particular reference to the case where the same carriage actuating mechanism is to be employed in a press of the more expensive type. In such a case it is desirable to permit the movement of the car riage to be checked at will for the purpose of permitting it to remain in contact with the inking cylinder or other ink distributing device while the other parts of the press continue to operate as usual.

In order to explain the improvements reference will now be had to the accompanying drawings in which,

Figure l is a View in side elevation of a printlng press, showing the frame thereof and a few attached parts which will sufficiently illustrate the invention, and Fig. 2 is a similar view showing the illustrated parts in a different position.

The carriage itself is not illustrated, but it may be of any suitable construction and the immediate connection with its actuating mechanism is through a link 35 which is pivoted to one end of a weighted lever 34 mounted upon a pivot 33 in the frame of the press. This weighted lever is connected to the crank 77 through the medium of a link 45, one end of which is connected to a connecting piece 47 and the other end to a project-ion 46 securely fastened upon the crank pin 76, the latter being embraced as usual by the corresponding connecting rod 71.

The connecting piece 47 is in the form of a bell-crank lever which is also mounted upon the pivot 33 and one arm of which has pivoted thereto a free connecting link 48 provided with a pin 49 adapted to engage 111 a recess 34 formed in the Weighted lever 34. From Fig. 1, where this pin is engaged in said recess, it will be seen that while the parts are in this position, the connecting piece 47 through its link 48 is substantially one piece with the lever 34 and that, as the crank 77 revolves, the lever 34 will be reciprocated through the medium of the link 45 and the connecting piece 47, thus imparting to the carriage the desired and proper movements. This movement is more particularly referred to, described and illustrated in the companion application before mentioned. hen, however, the pressman wishes to permit the carriage with the form rollers to rest upon the ink distributing device at the top of the press, he moves a rod 44 which is connected to one end of a lever 42, also pivoted upon the pivot 33, thus bringing the other arm 42 of the lever into the path of the pin 49, one end of which projects from the recess 34 so as to contact with the arm 42. The latter is rounded so as to permit the pin 49 to ride upon the same, and thus acts as a sort of cam to check or divert the pin '49 from its normal course with the result that the latter is lifted out of the recess 34 and disconnects the lever 47 from the lever 34. In this case, the lever 47 will be reciprocated back and forth with the in 49 traveling upon a curved surface 49 ormed uponthe lever 34. The end of the link 48 in which the pin 49 is secured is weighted so that when the shoe 42' is removed from the range of said pin 49, the pin will drop again into the recess, when it has reached the same in its movement back and forth upon the curved surface 49. The lever 34, during the period when the pin 49 is disengaged from its recess, will remain stationary in such a position as to hold the carriage at its upper limit and it will be maintained in this position on account of the counterbalance produced by the weight upon parts have approximately reached the posi-.

tion shown in Fig. 2.

Various changes in the construction of the connectlng piece and the cooperating parts of the lever 34 as well as in the trip in operative relation therewith may be made with out departing from the spirit of the invention.

I claim as my invention;

1. In a printing press, the combination with the form-inking carriage, of means to operate the same including a crank, a link operatively connected thereto, a weighted lever, and a connecting piece consisting of a bell-crank lever one arm of which is pivoted to the link and the other arm of which has a free link through which it is adapted to be connected to the weighted lever.

2. In a printing press, the combination with the form-inking carriage, of a weighted lever included in its actuating mechanism, a connecting piece consisting of a bell-crank lever pivoted along the same center line as the weighted lever and having on one arm a free link provided with a pin, the said weighted lever having a curved surface and a recessvat the end of the surface for the pin to ride upon and engage in respectively, means to actuate the carriage through the bell-crank lever, and means to check the normal movement of the pin at a certain point.

3. In a printing press, the combination of actuating mechanism for the form-inking carriage including a weighted lever, a pivot therefor, a bell-crank lever mounted upon said pivot and having a weighted link piv oted to one arm, a curved surface and a rccess at the end thereof formed upon said weighted lever, a pin upon the link adapted to travel upon said surface and engage in said recess respectively, means to reciprocate said bell-crank lever in order to actuate the carriage, and a third lever mounted upon said pivot and having ashoe adapted to check the normal movement of the pin at a certain point to disengage it from the recess in the weighted lever and cause it to ride upon the curved surface.

This specification signed and witnessed this 13th day of August, A. D. 1908.

JOHN THOMSON. Signed in the presence of J. R. FRITH, Loans E. VARNEY. 

